Saturday, April 12, 2014

I need work

Hi guys !!

I would like to give you some news.
It's been a long time since I don't post anything over there.
As some of you already know, my private life is a bit complicated and I have to fight against financial difficulties.
So... If you need some C, java, embedded development for a short period of time, i can be your man !
Please consider this proposal as freetime job.
Just let me know.

Hi Christian. I live in France (near Nancy and Bordeaux). I have pretty strong knowledge in C programming language (mostly for embedded development) but I switch to Java since few months (mostly osgi framework). I don't have true practice in Android development but I'm definitely interested (this the reason why I switch to Java)

If your request is still valid than it really matches to my need.I've just jumped into Bluetooth programing. I work on a project where a device would send and receive some small data packages via bluetooth. My first idea was to use a simple BT module like HC-05 or so and send data driven by an AVR.Then I realized that these BT modules have an MCU so I can save the additiona AVR, because the MCU on the BT module would be able to run an additional simple program to do some extra job. For this the CC2541 seems a good solution, but I have no preference.So I need some help or cooperation on this. Of course not for free.

If this is still valid request, just contact me via : ikke@gmx.net and we have a go for a project with LED/bluetooth/smartphone-app ? If this is within your limitations im looking forward to your email.Best Paul

Project DescriptionWe are currently using a CSR8670 to bring in audio through the A/D converters at 24KHz. The audio is then routed through the Kalimba and then to the I2S port in. The I2S is in slave mode. We have all the source C code for the above part of the project.

We now wish to add Blue Tooth capability to the system. The above system is hooked to a long-range radio thru the I2S bus. We want to be able to use Blue Tooth headsets instead of wired headsets.This means that our CSR8670 will need to be in source mode for Bluetooth applications. Also since Bluetooth only works in 8KHz or 16KHZ modes, we need to use a “sample_rate_converter”. Since most noise canceling algorithms are also based on 8KHz or 16KHz, we wish to switch to a system that is 8KHz based.Project:1. Put our CSR8670 system into source Bluetooth mode so that it will be the master which will add in other Blue Tooth headsets. The whole Bluetooth system will have to be added.2. Set up all sampling rates to work at 8KHz for the A/D converters and the Bluetooth Headsets.3. Use a “sample_rate_converter” to change the 8KHz to 24KHz sampling rate which goes to the I2S bus. The I2S has to work at 24KHz. The ADK4.3.1.5 and ADK4.3.0 has a sample_rate_converter.asm in the C:\ADK_CSR867x.WIN4.3.1.5\apps\source file area. You may have to come up with the filter coefficients for the upsampling and downsampling.4. Integrate this with our current C program that does volume control and side tone control.5. Add additional controls to switch between A/D inputs for the audio or Bluetooth.

I am a DSP engineer focus on the Kalimba DSP (CSR86705 's internal DSP) for the past 4 years, my daily work is implementing algorithm on Kalimba, I am familiar with its assemblly language, and the framework/architechure, I think I am be able to complete your requirement,

you can contact me with the Email: drew_guan@163.com and the phone: +8613725571350 008613725571350